An unsuspecting seaman becomes involved in a web of intrigue when a woman hires him to work on her husband's yacht. Hayworth (a one-time Mrs. Orson Welles), in her only role as a villainess, plays a manipulative, sensual schemer. Wonderful and innovative cinematic techniques from Welles, as usual, including a tense scene in a hall of mirrors. Filmed on a yacht belonging to Errol Flynn.